<?php

class pluginLinks extends Plugin
{

	public function init()
	{
		// JSON database
		$jsondb = json_encode(array(
			'Bludit' => 'https://www.bludit.com',
			'Bludit PRO' => 'https://pro.bludit.com'
		));

		// Fields and default values for the database of this plugin
		$this->dbFields = array(
			'label' => 'Links',
			'jsondb' => $jsondb
		);

		// Disable default Save and Cancel button
		$this->formButtons = false;
	}

	// Method called when a POST request is sent
	public function post()
	{
		// Get current jsondb value from database
		// All data stored in the database is html encoded
		$jsondb = $this->db['jsondb'];
		$jsondb = Sanitize::htmlDecode($jsondb);

		// Convert JSON to Array
		$links = json_decode($jsondb, true);

		// Check if the user click on the button delete or add
		if (isset($_POST['deleteLink'])) {
			// Values from $_POST
			$name = $_POST['deleteLink'];

			// Delete the link from the array
			unset($links[$name]);
		} elseif (isset($_POST['addLink'])) {
			// Values from $_POST
			$name = $_POST['linkName'];
			$url = $_POST['linkURL'];

			// Check empty string
			if (empty($name)) {
				return false;
			}

			// Add the link
			$links[$name] = $url;
		}

		// Encode html to store the values on the database
		$this->db['label'] = Sanitize::html($_POST['label']);
		$this->db['jsondb'] = Sanitize::html(json_encode($links));

		// Save the database
		return $this->save();
	}

	// Method called on plugin settings on the admin area
	public function form()
	{
		global $L;

		$html  = '<div class="alert alert-primary" role="alert">';
		$html .= $this->description();
		$html .= '</div>';

		$html .= '<div>';
		$html .= '<label>' . $L->get('Label') . '</label>';
		$html .= '<input name="label" class="form-control" type="text" dir="auto" value="' . $this->getValue('label') . '">';
		$html .= '<span class="tip">' . $L->get('This title is almost always used in the sidebar of the site') . '</span>';
		$html .= '</div>';

		$html .= '<div>';
		$html .= '<button name="save" class="btn btn-primary my-2" type="submit">' . $L->get('Save') . '</button>';
		$html .= '</div>';

		// New link, when the user click on save button this call the method post()
		// and the new link is added to the database
		$html .= '<h4 class="mt-3">' . $L->get('Add a new link') . '</h4>';

		$html .= '<div>';
		$html .= '<label>' . $L->get('Name') . '</label>';
		$html .= '<input name="linkName" type="text" dir="auto" class="form-control" value="" placeholder="Bludit">';
		$html .= '</div>';

		$html .= '<div>';
		$html .= '<label>' . $L->get('Url') . '</label>';
		$html .= '<input name="linkURL" type="text" dir="auto" class="form-control" value="" placeholder="https://www.bludit.com/">';
		$html .= '</div>';

		$html .= '<div>';
		$html .= '<button name="addLink" class="btn btn-primary my-2" type="submit">' . $L->get('Add') . '</button>';
		$html .= '</div>';

		// Get the JSON DB, getValue() with the option unsanitized HTML code
		$jsondb = $this->getValue('jsondb', $unsanitized = false);
		$links = json_decode($jsondb, true);

		$html .= !empty($links) ? '<h4 class="mt-3">' . $L->get('Links') . '</h4>' : '';

		foreach ($links as $name => $url) {
			$html .= '<div class="my-2">';
			$html .= '<label>' . $L->get('Name') . '</label>';
			$html .= '<input type="text" dir="auto" class="form-control" value="' . $name . '" disabled>';
			$html .= '</div>';

			$html .= '<div>';
			$html .= '<label>' . $L->get('Url') . '</label>';
			$html .= '<input type="text" dir="auto" class="form-control" value="' . $url . '" disabled>';
			$html .= '</div>';

			$html .= '<div>';
			$html .= '<button name="deleteLink" class="btn btn-secondary my-2" type="submit" value="' . $name . '">' . $L->get('Delete') . '</button>';
			$html .= '</div>';
		}

		return $html;
	}

	// Method called on the sidebar of the website
	public function siteSidebar()
	{
		global $L;

		// HTML for sidebar
		$html  = '<div class="plugin plugin-pages">';
		if ($this->getValue('label')) {
			$html .= '<h2 class="plugin-label">' . $this->getValue('label') . '</h2>';
		}
		$html .= '<div class="plugin-content">';
		$html .= '<ul>';

		// Get the JSON DB, getValue() with the option unsanitized HTML code
		$jsondb = $this->getValue('jsondb', false);
		$links = json_decode($jsondb);

		// By default, the database of categories is alphanumeric sorted
		foreach ($links as $name => $url) {
			$html .= '<li>';
			$html .= '<a href="' . $url . '">';
			$html .= $name;
			$html .= '</a>';
			$html .= '</li>';
		}

		$html .= '</ul>';
		$html .= '</div>';
		$html .= '</div>';

		return $html;
	}
}
